Portion of a diskette sleeve



FIG. 1 is a front view of a portion of a diskette sleeve showing my new design; and,

FIG. 2 is a perspective view thereof.

The unshown bottom and side edges of the sleeve form no part of the claimed design. The broken line showing of the remainder of the sleeve is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a diskette sleeve, as shown and described. 